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    • Shimano Dura-Ace Di2 EW90 Junction-A Box

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        • $72.99 72.99
        • RRP $118.99
        • Save 39%
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      Select Option
      Non-FlightDeck - 3 Port

Shimano Dura-Ace Di2 EW90 Junction-A Box

The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion and stretching, but provides effortless gear shifts.


  • This junction A is required to connect the shifters via E-tube wires to the down tube junction wire
  • 3-port design, one for down tube wire to bottom bracket junction, two for shifter connection
  • Battery level indicator feature
  • E-tube EW-SD50 wires not included
  • Additional charging point when using internal battery
  • Gear index setup switch to allow fine tuning via shifter buttons
  • Reliable and secure water resistant connectors
  • Stem mounting strap included

A 2 year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).

Buy Shimano Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.

  • Delivery cost $9.99
  • Delivers toUnited States of America
  • 365 Days return or exchange

    If you're not completely satisfied with an item you may return it within 12 months of purchase. We'll give you a full refund if the item hasn't been used or fitted.

    More information on returns
  • Pay by Bank Transfer, PayPal or Card


  • Colour: Black
  • Option: Non-FlightDeck - 3 Port

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